6. Bicycle crunches
Make sure you engage your abs and twist from your core. Your goal is 3 sets and for each set you’ve got to complete 10 bicycle crunches with each leg.
1. Lie flat on your back, hands behind your head and your knees towards your chest.
2. Straighten your right leg out to a 45-degree angle and bring your right elbow towards the left knee.
3. Now switch sides and repeat on the other side to complete one rep.